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Finding the Fourth Proportional to 202,881.72, 279,882.45 and 131,284.86

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Solution

The fourth proportional to 202,881.72, 279,882.45 and 131,284.86 is: 181,112.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,881.72 : 279,882.45 = 131,284.86 : x
  2. Step 2: Convert to fraction form
    202,881.72/279,882.45 = 131,284.86/x
  3. Step 3: Cross multiply
    202,881.72x = 279,882.45 × 131,284.86
  4. Step 4: Simplify right side
    202,881.72x = 36,744,328,264.71
  5. Step 5: Solve for x
    x = 36,744,328,264.71/202,881.72
  6. Step 6: Final answer
    x = 181,112.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.